Liquid combustible strainer



= Aug. 24 1926.

V. DlRATZOUlAN LiQUID COMBUSTIBLE STRAINER Filed Feb. 6, 5

MCI/ELM 9 I Smvcmto: 95 40 e1tm 2 Paterated 2 3-, ieae'.

UNITED STATES VAHAN nrim'rzoui'nu, or New YORK, NY. 1

LIQUID COMBUSTIB'L E STRAINER.

Application filed. February 6, 1925. Serial No. 7,198.

This invention relates to straining devices for removing foreign matterboth solid and liquid from liquid fuel and has particular reference to adevice applicable for insertion in the fuel feed pipe in a motorvehicle. The invention has for its object to provide a device which isequally applicable in connection with a vacuum fuel feed system as wellas with those systems wherein the fuel flows by gravity. The inventionalso seeks to provide a device of the character described which iscapable of effective operation not only in an upright position but alsowhen its axis is at an inclination. The invention also has to do withthe structural details of design in the interest of cheapness and easeof manufacture and facility of adaptation to a variety of arrangementsof fuel feeding systems. These and other objects of the invention andthe means for their attainment will be more apparent from the followingdetailed description of the invention taken in connection with theaccompanying drawings illustrating a preferred embodiment thereof inwhich:

Figure 1 is a view in side elevation showing the straining deviceaccording to the resent invention, parts being removed in the interestof clearness.

Figure 2 is a view in perspective showing the strainer or cage adaptedfor use in connection with the present invention whereby a maximumstraining area is availed of.

Referring to the drawings the fuel feed line from either a vacuum tankor a fuel reservoir is indicatedat a and the continuation thereofleading to the carbureter or similar device as indicated at b;Interposed in the line a, Z), is the straining device according to thepresent invention. The device comprises broadly a chamber 0 formed by acylindrical portion 0 preferably formed of transparent material such asglass. The ends of the cylindrical wall portion 0 are adapted to beclosed by end members or plates (Z, 6, respectively, plate d beingremovably secured to the intake pipe at and plate 6 being similarlysecured to the outlet pipe 6. Preferably plates (Z and e are formed ofpressed metal or the like whereof the peripheral portions d, e areoffset to form seats for clamping bolts f, suitable apertures beingprovided in the respective plates to receive the bolts, and if desired,the respective edgesd and 6 may be turned inwardly in the interest of aneat and pleasing appearance. The joint between. the plates 65 and e andthe cylinder 0 may be effectively sealed by a ring of yieldingnonmetallic packing g, it, respectively. Centrally, plates (Z and e areofiset as at (Z 6 respectively, .and are formedwith an aperture asindicated at elf, nipples i, j, being rigidly secured to the respectiveplates as by the clamping nuts '5, i and 9', 3' Secured in anyconvenient manner as by solder to the inner end of the nipple dis ashort pipe section is, the inner end of which is offset from the axis ofthe strainer and the tube 70 extends downwardly within the interior ofthe chamber 0 to a point well beyond the mid-portion thereof andsubstantially for a distance equal to two-thirds the height of chamber0. Extending inwardly of nipple 3' there is shown a tube Z similarlyoffset and also extending beyond the middle region of the chamber.considerably past the inner end of tube I Carried with the end of tube Zis a cage Z preferably formed of fine mesh copper wire which will permitthe passage of gasolene therethrough but which will prevent the passageof impurities, solid particles or water. The cage is conveniently formedas a truncated cylinder in order that it may be disposed to one side ofthe axis of the straining device as illustrated in Figure 1 and willaccommodate itself to the curved walls of the chamber. Obviously,however, the cage Z might conveniently be formed as a sphere althoughfrom practical considerations of manufacture the truncated cylinder willbe found most advantageous.

In operation the straining device is inserted within the fuel feed lineof either a vacuum feed or'gravity feed system and secured to therespective ends of the feed pipe a and b by means of couplings a, b,respectively. The couplings may be of such type that the ends of thepipe a and I), respectively, may be belled slightly and forced by meansof the couplings against the curvilinear surface of the respectivenipples i and By the use of such coupling elements the device may bereadily accommodated to feed lines of varying diameter. The liquid fuelentering chamber 0 through the tube is from pipe a gradually fills thechamber until the upper level reaches cage Z. The gasolene passesthrough the fine mesh of the cage and exits through tube Z into the pipe2) leading to the carbureter. Water and solid impurities being unable topass through the fine mesh sink to the bottom of the chamher 0 Wherethey may be drawn ofi' from time to time through the pet cock m securedin an appropriate aperture in the plate 0. It will be apparent that thedevice is equally applicable when disposed in a vertical position orwhen so disposed that its principal axis is in a substantiallyhorizontal plane. with such latter disposition the cage Z will, ofcourse, be disposed in the upper portion of the chamber, the pet cock mbeing so positioned as to drain the lowermost portion thereof. By theprovision of a cylindrical or substantially cylindrical or sphericalstrainer cage Z sufficient sieve surface is availed of at all times foradequate and complete straining of the gasolene, such impurities as maytemporarily clog the apertures in portions of the sieve beinginsuflicient to render the device inoperative, there being always amplestraining surface free for the operation of the device. The device isreadily cleaned, easily inserted in existing fuel lines and is readilymanufactured, assembled and disassembled with few operations and at aminimum cost.

Various modifications of the device just described Will occur to thoseskilled in the art and are deemed to be Within the scope of theinvention, reference being had to the accompanying claim for an exactdelineation thereof. I

What I claim is:

In a liquid fuel strainer, a transparent cylindrical vessel, an uppermetallic closure for one end of the vessel formed with 'a centralorifice, a lower metallic closure for the other end of the vessel formedwith a central orifice, bolts engaging both closures, nipples disposedin the respective apertures in the closures and clamping nuts to retainsaid nipples therein respectively, means to engage said nipplesrespectively with the respective ends of fuel feed pipes, an inlet tubesecured to the inner end of the nipple carried with the upper closure, afuel outlet tube extending from the fuel inlet to a point within thechamber beyond its mid-portion and offset at its inner end with respectto the axis of the chamber, a fuel outlet chamber tube extending fromthe fuel outlet to a point within the chamber beyond its midportion andoffset at its inner end with respect to the axis of the chamber, and

strainer cage carried with the end of the outlet tube within thechamber.

This specification signed this 4th day of February A. D., 1925.

VAHAN 'DIRATZOUIAN.

